PartsTable TECHNICAL DATA SHEET
NSN 4730-01-397-7912Government record, cited

Packing Nut4730-01-397-7912

NSN 4730-01-397-7912 · NIIN 013977912 · Part number M3255-10
Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 0ASY6
Government record, cited
NSN 4730-01-397-7912 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-397-7912. Manufacturer of record part number: M3255-10.
Also searched as  4730-01-397-7912 · 4730013977912 · NIIN 013977912 · 01-397-7912 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 0ASY6 · M3255-10 · X5282-20
Nearby stock numbers  ·
Features
  • Packing Nut — FSC 4730
  • Width Across Flats: 2.188 INCHES NOMINAL IN
  • Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED
  • Thread Direction: RIGHT-HAND
  • Casehardening Indicator: NOT CASEHARDENED
  • Thread Size: 1 5/8-12
  • Screw Thread Series Designator: UN
  • Thread Class: 3B
Identification
  • NSN: 4730-01-397-7912
  • NIIN: 013977912
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: M3255-10
  • Manufacturer: Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc
General Description

The Packing Nut, cataloged under National Stock Number 4730-01-397-7912, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-397-7912
Primary Part NumberM3255-10
Item NamePacking Nut
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerDerbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc
StatusACTIVE
Width Across Flats2.188 INCHES NOMINAL IN
Style DesignatorHEXAGON, INTERNAL THREAD, SHOULDERED
Thread DirectionRIGHT-HAND
Casehardening IndicatorNOT CASEHARDENED
Thread Size1 5/8-12
Screw Thread Series DesignatorUN
Thread Class3B
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
M3255-10 PRIMARY Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA)
X5282-20 Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA)
No interchangeability data on file.
Other items in FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
4730-00-001-0008
COUPLING,TUBE

Frequently Asked Questions

What is NSN 4730-01-397-7912?

NSN 4730-01-397-7912 is a Packing Nut, manufactured by Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-397-7912?

NSN 4730-01-397-7912 has 2 manufacturer part numbers on file: M3255-10 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), X5282-20 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc).

What are the specifications of M3255-10?

Key specifications for M3255-10: Width Across Flats: 2.188 INCHES NOMINAL IN; Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED; Overall Length: 1.250 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND. 7 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-397-7912 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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